At Mercury, the Ohio Players enjoyed their greatest success; not only did their sound coalesce, but they became notorious for their sexually provocative LP covers, a tradition begun during their Westbound tenure.
Objects float when the volume of water they displace is less than the volume of the objects themselves. When objects sink, the volume of water they displace is greater than the volume of the object. The principle may seem relatively simple: Light objects float and heavy objects sink.
You may see some pumice stones that have broken off due to erosion by the sea. Amazingly, they will actually float on the water for some time. Dense stones, of course, do not float on water. But because pumice is full of air bubbles, it is less dense than water.